Bearings for hydro power machines - Voith Hydro
Bearings for hydro power machines - Voith Hydro
Bearings for hydro power machines - Voith Hydro
Create successful ePaper yourself
Turn your PDF publications into a flip-book with our unique Google optimized e-Paper software.
<strong>Bearings</strong> <strong>for</strong> <strong>hydro</strong> <strong>power</strong> <strong>machines</strong><br />
General<br />
In <strong>hydro</strong> <strong>power</strong> <strong>machines</strong>, bearings<br />
are among the most sophisticated<br />
components. They are responsible<br />
<strong>for</strong> smooth operation and high<br />
availability of the unit.<br />
With more than 140 years of<br />
experience, <strong>Voith</strong> <strong>Hydro</strong> offers<br />
highly reliable new or replacement<br />
bearings <strong>for</strong> any application.<br />
The compa ny’s extensive bearing<br />
modernization expertise is unique.<br />
<strong>Voith</strong> <strong>Hydro</strong> is ISO 9001-certified<br />
and equipped with state-of-the-art<br />
engineering facilities. Stringent<br />
quality control and continuous<br />
research and development ensure<br />
optimum technical solutions and<br />
products of the highest quality <strong>for</strong><br />
your project.
Products and expertise<br />
<strong>Hydro</strong>dynamic bearings ensure<br />
wear-free operation.<br />
Pump-turbine workshop assembly<br />
of segmented guide bearing<br />
Bearing applications<br />
<strong>Hydro</strong>dynamic bearings are installed<br />
in generators and turbines<br />
with vertical and horizontal shafts.<br />
<strong>Voith</strong> <strong>Hydro</strong>’s bearings are designed<br />
<strong>for</strong> very high reliability and availability.<br />
Individual needs of each application<br />
are considered to ensure<br />
wear-free operation over decades<br />
with only minimum service requirements.<br />
Bearing types<br />
Thrust bearing during assembly<br />
Our services and supplies include<br />
bearings <strong>for</strong> any type or size of<br />
<strong>hydro</strong> <strong>power</strong> <strong>machines</strong>:<br />
� Tilting segment thrust and guide<br />
bearings; oil lubricated<br />
� Journal guide bearings; either oil<br />
or water lubricated<br />
� Magnetic thrust bearings; special<br />
applications<br />
Cooling system<br />
Oil circulation is achieved either by<br />
centrifugal <strong>for</strong>ces of the rotating<br />
shaft or by external pumps. Heat<br />
exchangers are normally placed<br />
outside the bearing housing. Internal<br />
coolers as an option are also available.<br />
Effective instrumentation<br />
rounds out the cooling system to<br />
guarantee the bearing’s function.
Bearing segments and support components<br />
Bearing housing seals<br />
<strong>Voith</strong> <strong>Hydro</strong> also specializes in<br />
seals. Depending on the application,<br />
individually designed splash<br />
protection or pressurized air seals<br />
are available, complete with oil<br />
dust extraction systems.<br />
Rehabilitation and service<br />
As a worldwide supplier of complete<br />
<strong>hydro</strong> <strong>power</strong> <strong>machines</strong>,<br />
<strong>Voith</strong> <strong>Hydro</strong> is the ideal choice<br />
when it comes to replacing or<br />
servicing your equipment. Special<br />
boundary conditions and applications,<br />
<strong>for</strong> example bi-directional<br />
units, are considered at an early<br />
stage. <strong>Voith</strong> <strong>Hydro</strong> can optimize<br />
your new or replacement bearing<br />
<strong>for</strong> maximum efficiency.<br />
Temperature distribution analysis by FEA<br />
Bearing per<strong>for</strong>mance<br />
<strong>Voith</strong> <strong>Hydro</strong> uses numerical tools<br />
such as CFD (Computational Fluid<br />
Dynamics) and FEA (Finite Element<br />
Analysis) to predict the bearing’s<br />
behavior during operation. Proper<br />
monitoring assures that the condition<br />
of the bearing is always known.<br />
2<br />
3
<strong>Voith</strong> <strong>Hydro</strong> Holding GmbH & Co. KG<br />
Alexanderstrasse 11<br />
89522 Heidenheim/Germany<br />
Tel. +49 7321 37 0<br />
Fax +49 7321 37 7828<br />
info.voith<strong>hydro</strong>@voith.com<br />
www.voith<strong>hydro</strong>.com<br />
A <strong>Voith</strong> and Siemens Company<br />
References <strong>Voith</strong> <strong>Hydro</strong> guide bearings References <strong>Voith</strong> <strong>Hydro</strong> thrust bearings<br />
Range of experience<br />
Journal guide bearings<br />
Bearing diameter ≤ 1 000 mm<br />
Oil film thickness > 50 μm<br />
Guide bearings with tilting segments<br />
Bearing diameter ≤ 4 300 mm<br />
Segment size ≤ 500 mm<br />
Oil film thickness ≥ 50 μm<br />
Thrust bearings with tilting segments<br />
Outer bearing diameter ≤ 4 600 mm<br />
Segment size ≤ 900 mm<br />
Bearing loads ≤ 31 000 kN<br />
Oil film thickness ≥ 25 μm<br />
t3345 e 05.2009 1000 MSW Technical data and illustrations subject to change.
Change language